FRONTEND ENGINEER (JAVASCRIPT / REACT)

STATION F; Paris; Hybride; EUR 47 000 - 58 000; Plein temps

Résumé du poste

Welcome to the Jungle recrute un développeur front-end pour concevoir et maintenir des interfaces client performantes et accessibles, en collaboration avec une équipe agile.

Vous travaillerez dans une équipe transversale avec des managers produit et designers, en veillant à une expérience utilisateur optimale et à des livrables de qualité tout en respectant les pratiques CI/CD et les tests.

Qualifications

• 3 à 5 ans d'expérience professionnelle en développement front-end.
• Forte expertise en architecture moderne d'applications web et écosystème React.

Responsabilités

• Conception et développement d'applications React évolutives et de bibliothèques de composants.
• Construction d'interfaces réactives et accessibles selon les design systems et les bonnes pratiques UI/UX.
• Rédaction de code propre, testable et conforme aux standards d'équipe.
• Participation à des revues de code et à l'amélioration des performances.
• Intégration d'APIs REST côté front-end et optimisation du bundle.
• Contribuer à la documentation technique et aux décisions d'architecture.

Connaissances

React ecosystem

Front-end architecture

FR/EN fluency

Problem solving

User-centric mindset

Outils

React

Redux

TypeScript

Testing (Jest)

CSS (Tailwind/Styled)

Webpack/Vite

Description du poste

À propos

At Welcome to the Jungle, we believe working is good. But thriving with the right people is better. We provide a suite of tools, content, and experiences that make recruitment more transparent, authentic, and human.

• We help companies build their recruitment strategy by sharing their story through employer branding, enabling them to attract, engage, and retain talent who share their values.
• We guide candidates to their future teams through immersive job listings and support them throughout their job search with a personalized candidate experience.

Descriptif du poste

As a Front End Developer, you will be responsible for designing, developing, and maintaining the client-side components, user interfaces, and user experience of our software applications. This role requires deep expertise in front-end technologies and the ability to build performant, accessible, and scalable user interfaces while collaborating effectively within an agile team environment.

You will work closely with Engineering Managers, Product Managers, Back End Developers, Designers, and other team members to implement features, improve application architecture, and ensure high-quality deliverables that meet both technical and business requirements. Curious by nature, you won't hesitate to dive into back-end tasks when the context calls for it, bringing a full-stack mindset to the problems you tackle.

You will be part of a cross-functional squad and will contribute to technical decisions while maintaining high standards of code quality, performance, accessibility, and user experience.

Learn more about our Tech Team through our Medium

Key Responsibilities

Technical Development

• You will design, develop, and maintain scalable React applications and reusable component libraries
• You will build responsive and accessible user interfaces following design systems and UI/UX best practices
• You will write clean, maintainable, and well-tested code following team standards and best practices
• You will participate in code reviews and provide constructive feedback to team members
• You will debug production issues and implement robust solutions
• You will contribute to technical documentation and architecture decisions
• You will integrate RESTful APIs endpoints into the front-end application
• You will optimize application performance, bundle size, and loading times
• You will implement state management solutions and client-side caching strategies
• You will participate in agile ceremonies and technical planning sessions

Collaboration and Innovation

• You will actively participate within an autonomous mission team (PM, Designer, Engineering manager, Back End Developers) to clarify priorities and user needs
• You will contribute to technical discussions and architecture decisions
• You will collaborate with designers to implement pixel-perfect, accessible interfaces
• You will work with back-end developers to define API contracts and data structures
• You will participate in squad rituals and team meetings
• You will handle support requests and bug fixes within agreed SLAs

Quality & Best Practices

• You will write unit tests, integration tests, and end-to-end tests following TDD principles
• You will collaborate with QA team to ensure comprehensive test coverage
• You will participate in pair programming sessions with team members
• You will monitor application performance, Core Web Vitals, and implement improvements
• You will follow accessibility standards (WCAG) and ensure inclusive user experiences
• You will contribute to continuous integration and deployment processes
• You will implement error tracking, monitoring, and analytics
• You will ensure cross-browser compatibility and responsive design
• You will optimize for performance: code splitting, lazy loading, image optimization

Profil recherché

Experience & Expertise

You'd be our ideal candidate if you:

• 3 to 5 years of professional front-end development experience
• Strong expertise in modern web application architecture and React ecosystem

Technical Skills

• Proficient in JavaScript/TypeScript, React (Hooks, Context, Router), and modern ES6+ features
• Experienced with state management (Redux, Zustand, TanStack Query) and API integration (REST)
• Skilled in CSS (Modules, Styled Components, Tailwind), build tools (Webpack, Vite), and testing (Jest, React Testing Library, Playwright, Cypress)
• Knowledgeable in performance optimization, accessibility standards (WCAG, ARIA), responsive design, and design systems (Storybook)
• Comfortable with Git, CI/CD practices, and modern development workflows

Soft Skills

• Excellent problem-solving abilities with strong attention to detail
• Fluent in both French and English
• Collaborative team player with product thinking and user-centric mindset
• Proactive in suggesting improvements with a focus on maintainable, well-documented code
• Passionate about user experience, accessibility, and inclusive design

Welcome to the Jungle aspires to have a positive social impact, and pays particular attention to respecting diversity, inclusion and equity.

Regardless of qualifications, we're looking for a passionate individual who will fit in well with the team and take responsibility for these issues.

Process de recrutement

• Step 1: First call with our Talent Acquisition
• Step 2: Take-home case, followed by a technical discussion if the case is successful
• Step 3: Interview with our Product team in English
• Step 4: Interview with your future manager and a stakeholder

Please note that the order of these steps is not definitive and may be adapted depending on availability and the progress of the process.

Informations complémentaires

• Type de contrat : CDI
• Lieu : Paris
• Expérience : > 3 ans
• Télétravail partiel possible
• Salaire : entre 47000€ et 58000€ / an